Would it be possible for you to test the latest upstream stable kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.2 stable kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2.8-ckt9-wily/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1580434 Title: kernel 4.2.0-36 causes unity to break on 15.10 Status in linux package in Ubuntu: Incomplete Bug description: I run Ubuntu desktop 15.10 in a Oracle VirtualBox VM. After updating the kernel to 4.2.0-36 Unity stopped working (after the restart). The symptoms were: - The screen would not use the entire real estate in either the full screen or the windowed mode (of the VM) - On entering login information, only the desktop background would display without dash/launcher, files on desktop or any menu or keyboard action. - If you started / restarted unity from a shell (Ctrl + Shift + F1 or from a SSH session), the desktop files and mouse/keyboard actions would work, but still no dash/launcher. The problems went away after falling back to kernel 4.2.0-35. If additional information is required, please let me know I will try my best to get that. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1580434/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp

